I've deployed a new user application driver, however it will not start.
Can you have two user application drivers in the same environment but running on different vault engines?

Currently we are trying to migrate from 4.0.2 to 4.6 however the 4.6 driver won't start, well technically the package for the UA driver is 4.5.1 but none the less, it doesn't start. The error in the log is::
<nds dtdversion="4.0" ndsversion="8.x">
<source>
<product edition="Advanced" version="4.5.6.0">DirXML</product>
<contact>NetIQ Corporation</contact>
</source>
<input>
<init-params src-dn="\devserver\devserver\Servers\DRIVERSET01\UserA ppDev2">
<authentication-info>
<server>devserver</server>
<user>CN=uaadmin,OU=SA,O=data</user>
<password><!-- content suppressed --></password>
</authentication-info>
<driver-options>
<ComposerContext display-name="Composer Context">com.novell.prov.srvprv</ComposerContext>
<Host display-name="Host">https://127.0.0.1</Host>
<Port display-name="Port">8543</Port>
<ApplicationContext display-name="Application Context">IDMProv</ApplicationContext>
<bOverrideinit display-name="Allow Initiator Override">yes</bOverrideinit>
</driver-options>
<publisher-options>
<pollingInterval display-name="Polling Interval (sec.)">6000</pollingInterval>
</publisher-options>
</init-params>
</input>
</nds>
[01/29/18 11:04:20.269]:UADev2 ST:ComposerDriverShim: getSchema() calling Composer WebService: GetSchema
[01/29/18 11:04:20.269]:UADev2 ST:
DirXML Log Event -------------------
Driver: \devserver\devserver\Servers\DRIVERSET01\UserAppDe v2
Status: Warning
Message: Code(-8001) Unable to retrieve application schema.
[01/29/18 11:04:20.270]:UADev2 ST:Loading Java shim com.novell.idm.driver.ComposerDriverShim.
[01/29/18 11:04:20.273]:UADev2 ST:Reading XML attribute vnd.nds.stream://devserver/devserver/Servers/DRIVERSET01/UserAppDev2#DirXML-ShimConfigInfo.
[01/29/18 11:04:20.274]:UADev2 ST:
<nds dtdversion="4.0" ndsversion="8.x">
<source>
<product edition="Advanced" version="4.5.6.0">DirXML</product>
<contact>NetIQ Corporation</contact>
</source>
<input>
<init-params src-dn="\devserver\devserver\Servers\DRIVERSET01\UserA ppDev2">
<authentication-info>
<server>devserver</server>
<user>CN=uaadmin,OU=SA,O=data</user>
<password><!-- content suppressed --></password>
</authentication-info>
<driver-options>
<ComposerContext display-name="Composer Context">com.novell.prov.srvprv</ComposerContext>
<Host display-name="Host">https://127.0.0.1</Host>
<Port display-name="Port">8543</Port>
<ApplicationContext display-name="Application Context">IDMProv</ApplicationContext>
<bOverrideinit display-name="Allow Initiator Override">yes</bOverrideinit>
</driver-options>
</init-params>
</input>
</nds>
[01/29/18 11:04:20.276]:UADev2 ST:ComposerDriverShim: Init: DriverDn = \devserver\devserver\Servers\DRIVERSET01\UserAppDe v2
[01/29/18 11:04:20.276]:UADev2 ST:ComposerDriverShim: In GetDRIVERDN =\devserver\devserver\Servers\DRIVERSET01\UserAppD ev2
[01/29/18 11:04:20.277]:UADev2 ST:ComposerDriverShim: Init: getDriverDn = \devserver\devserver\Servers\DRIVERSET01\UserAppDe v2
[01/29/18 11:04:20.277]:UADev2 ST:ComposerDriverShim: Init: ComposerServiceContext = com.novell.prov.srvprv
[01/29/18 11:04:20.277]:UADev2 ST:ComposerDriverShim: Init: ComposerServiceDriverInitMethodName = Initialize
[01/29/18 11:04:20.278]:UADev2 ST:ComposerDriverShim: Init: ComposerServiceDriverGetSchemaMethodName = GetSchema
[01/29/18 11:04:20.278]:UADev2 ST:ComposerDriverShim: Init: ComposerServiceDriverShutdownMethodName = Shutdown
[01/29/18 11:04:20.278]:UADev2 ST:ComposerDriverShim: Init: ComposerServicePublisherInitMethodName = InitializePublisher
[01/29/18 11:04:20.278]:UADev2 ST:ComposerDriverShim: Init: ComposerServicePublisherGetEventsMethodName = GetEvents
[01/29/18 11:04:20.279]:UADev2 ST:ComposerDriverShim: Init: ComposerServiceSubsriberInitMethodName = InitializeSubscriber
[01/29/18 11:04:20.279]:UADev2 ST:ComposerDriverShim: Init: ComposerServiceSubsriberExecuteMethodName = Execute
[01/29/18 11:04:20.279]:UADev2 ST:ComposerDriverShim: init() calling Composer WebService: Initialize
[01/29/18 11:04:20.279]:UADev2 ST:
DirXML Log Event -------------------
Driver: \devserver\devserver\Servers\DRIVERSET01\UserAppDe v2
Status: Error
Message: Code(-9010) An exception occurred: java.lang.NoClassDefFoundError: com/sssw/b2b/xs/GXSException
at com.novell.idm.driver.ComposerServiceHelper.callCo mposerService(Unknown Source)
at com.novell.idm.driver.ComposerServiceHelper.callCo mposerService(Unknown Source)
at com.novell.idm.driver.ComposerDriverShim.init(Unkn own Source)
at com.novell.nds.dirxml.engine.Driver.startShim(Driv er.java:1492)
at com.novell.nds.dirxml.engine.Driver.initialize(Dri ver.java:286)
at com.novell.nds.dirxml.engine.Driver.<init>(Driver. java:252)
at com.novell.nds.dirxml.engine.DriverEntry.run(Drive rEntry.java:586)
at java.lang.Thread.run(Thread.java:748)

[01/29/18 11:04:20.281]:UADev2 STriver terminated.
[01/29/18 11:04:20.281]:UADev2 ST:Writing XML attribute vnd.nds.stream://devserver/devserver/Servers/DRIVERSET01/UserAppDev2#DirXML-PersistentData.